the socketed leaf shape was popular in many cultures over centuries, and is still being produced. could be roman, celtic, german, other european, asian, or african, etc. provinance would help pin it down a bit. who/where did you buy it from? where was it found? was it found with any other artifacts? that could help pin it down more. hole may have been for mounting on an old museum exhibit. they're usually not as destructive nowadays when mounting them.
my (last year's model
) roman hasta for comparison
